To delete an Address Book field:
Note
While the default fields can be deleted, you must have a field of type Email, preferably entitled Email address, for Customers to be linked to their Address Book contact information when submitting Requests via the FootPrints interface and via email.
Note
Deleted data fields are no longer viewable and are removed from all FootPrints forms. The column is also deleted and the data no longer accessible. To undelete a field (assuming you've made a backup of your database), please contact BMC for instructions.